What?

I'd never been to this facility before. 

I followed all the directions given to me over the phone, but there was construction going on and detours around the building. I was pretty sure I was in the right place, but the sign over the desk said Lung Center instead of Sleep Study. 

So I asked.

"Is this the check in for the sleep study?"

And she said.

"What?"

There was construction, remember?

So I asked again a little louder. 

"Is This The Check In For The Sleep Study?"

And she said again a little louder.

"What?"

So, I asked once more, even louder and clearly annunciating.

"IS THIS. THE CHECK IN. FOR THE SLEE-PUH STUH-DEE?"

And she frowned. And turned away from me. And said quietly to her computer screen.

"Yes."

I took it as a well-you-didn't-have-to-shout reaction.

After she'd asked me TWICE. 

"What?"

I upset her. Now I feel bad.

What did *I* do wrong?

WHAT?